glib/gio/inotify/inotify-sub.c
Ryan Lortie cc5cd5e8ea inotify: fix segfault on watching hard links
The call to _start() fills in the dirname, basename, and filename
arguments according to the following rules:

  dir watches: dirname filled

  file watches: dirname and basename filled

  hardlink: filename filled

This doesn't map to how the current inotify backend works very nicely,
so we need to adjust things a bit when creating our "sub" objects.

https://bugzilla.gnome.org/show_bug.cgi?id=755721
2018-04-18 15:09:44 +01:00

82 lines
2.0 KiB
C

/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 2; tab-width: 8 -*- */
/* inotify-sub.c - GVFS Monitor based on inotify.
Copyright (C) 2006 John McCutchan
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this library; if not, see <http://www.gnu.org/licenses/>.
Authors:
John McCutchan <john@johnmccutchan.com>
*/
#include "config.h"
#include <string.h>
#include <glib.h>
#include "inotify-sub.h"
static gboolean is_debug_enabled = FALSE;
#define IS_W if (is_debug_enabled) g_warning
static gchar*
dup_dirname (const gchar *dirname)
{
gchar *d_dirname = g_strdup (dirname);
size_t len = strlen (d_dirname);
if (d_dirname[len - 1] == '/')
d_dirname[len - 1] = '\0';
return d_dirname;
}
inotify_sub*
_ih_sub_new (const gchar *dirname,
const gchar *basename,
const gchar *filename,
gpointer user_data)
{
inotify_sub *sub = NULL;
sub = g_new0 (inotify_sub, 1);
if (filename)
{
sub->dirname = g_path_get_dirname (filename);
sub->filename = g_path_get_basename (filename);
sub->hardlinks = TRUE;
}
else
{
sub->dirname = dup_dirname (dirname);
sub->filename = g_strdup (basename);
sub->hardlinks = FALSE;
}
sub->user_data = user_data;
IS_W ("new subscription for %s being setup\n", sub->dirname);
return sub;
}
void
_ih_sub_free (inotify_sub *sub)
{
g_free (sub->dirname);
g_free (sub->filename);
g_free (sub);
}